Optical Flats and the Newtinain Secondary Mirrors

All our secondary mirrors up to 4" MA are made of precision annealed Pyrex glass and larger ones are made of fused silica (quartzs), manufactured to an ultra accuracy to be PV 1/10 lambda or better in wave front tested with interfrometer, and are coated with the 96% enhanced aluminum coating. Contact us for the optical flats up to one meter.